<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<input type="checkbox" id="test"  name="xfz" />
	</body>
	<script type="text/javascript">
		var testNode  =document.querySelector("#test");

		//动一下节点的aproperty
        testNode.checked = false;

		//操作节点的attribute 会同步 property
        testNode.setAttribute("checked","checked")
	</script>
</html>
